You need to get the time orb after you put all the crystals on the pedastools.After that make sure to have a powerfull magic spell like magic bomb level 8 or lots of scrolls,plenty of healing potions and mana potions on your belts.Finally you need to wait until Draak's life bar is down to about half ( don't go below or he will just heal ),use the time orb and hope you don't run out of anything.Remember he can't heal while time orb is being used.